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Eaton's enclosed drives portfolio

Standard options

Enclosure options

  • NEMA Type 1, 1 filtered,12, 3R, 7
  • Wall-mount
  • Floor-mount
  • Space heater

Pilot device options

  • Indicating lights
  • Pushbuttons
  • HOA switches
  • Speed potentiometers
  • E-stops
  • External keypad

Control options

  • CPT
  • Terminal blocks
  • Control relays
  • Timers

Metering options

  • Elapsed time meter
  • Volt meter
  • Amp meter
  • Frequency meter
  • Power meter

Input power options

  • Circuit breaker disconnect
  • Fused disconnect
  • Fuses
  • Surge protection
  • Input reactor

Bypass options

  • Three-contactor bypass
  • Reduced voltage soft starter (RVSS) bypass

Output power options

  • Output contactor
  • Output reactor
  • dV/dt filter
  • Sine wave filter

Technology comparison

Eaton VFD type
How it works
Typical THD
Inductive reactors



Mitigates higher-order harmonics by providing high input impedance that limits high-frequency currents. 33-38%
Low-cost, simple application

Low effectiveness

Voltage drop concerns

12-Pulse converters
Two parallel 6-pulse converters fed by parallel isolation transformer paths, phase shifted 30°, which mitigates 5th and 7th order harmonics. Input impedance mitigates higher-order harmonics as well. 12-18%

Simple to apply

Extremely robust

Not as effective as other methods

Relative high cost compared to passive filter

Passive filters



Provides high input impedance for higher-order harmonics and a shunt-tuned reactor and capacitor to mitigate 5th and 7th harmonics. 6-8%

Simple retrofit

Low cost for performance

Insensitive to voltage balance

Challenges with generator design

Power factor issues

Less robust than 18-pulse

18-Pulse converters
Three parallel 6-pulse converters fed by a single-phase shifting autotransformer, phase shifted 20° to cancel all harmonics below the 17th. Input impedance mitigates higher-order harmonics as well. 3-6%

Simple to apply

Extremely robust

Higher cost on small hp
Active Front End drives
IGBT-based front end pulls relatively linear power from the line and uses a L-C-L filter to mitigate the IGBT switching noise. 3-5%

Slightly higher efficiency

Immune to voltage imbalance

Regeneration capability

High cost, not as robust as 18-pulse
How to buy from Eaton
Locate a distributor

Contact your Local Distributor for pricing, availability, ordering, expediting, and repairs.

Questions before you buy

Contact Eaton's Drives Pre-Sale Team for application support and quotes

Voice: 877-ETN-CARE (386-2273) option 2, option 7, option 1

(8:00 a.m.–5:00 p.m. Central Time U.S. [UTC –6])


How to buy

Contact EatonCare Customer Support Center for order placement, product price information, returns other than warranty returns, and information on local distributors or sales offices.

Voice: 877-ETN-CARE (386-2273) 

(8:00 a.m.–5:00 p.m. Central Time U.S. [UTC –6]                  

Voice for emergencies after hours: 800-543-7038 (6:00 p.m. – 8:00 a.m. Central Time U.S. [UTC –6])

Technical support

Contact Eaton's Drives Technical Resource Center for VFD startup, communication support and troublshooting

Voice: 877-ETN-CARE (386-2273) OPTION 2, OPTION 7, then select one of the following:
OPTION 1: pre-sale
OPTION 2: networking
OPTION 3: startup
OPTION 4: troubleshooting

(8:00 a.m.–5:00 p.m. Central Time U.S. [UTC –6]

Voice for emergencies after hours: 800-543-7038 (6:00 p.m. – 8:00 a.m. Central Time U.S. [UTC –6])


VFD Training

Learn more about Eaton's variable frequency drive training opportunities.

Warranty request

Contact Aftermarket Drives Support for warranty questions and/or concerns